1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <stdio.h>
19 #include <stdlib.h>
20 #include <string.h>
21 #include <unistd.h>
22
23 #include <string>
24
25 #include <android-base/file.h>
26 #include <android-base/strings.h>
27
28 #include "bugreportz.h"
29
30 static constexpr char BEGIN_PREFIX[] = "BEGIN:";
31 static constexpr char PROGRESS_PREFIX[] = "PROGRESS:";
32
write_line(const std::string & line,bool show_progress)33 static void write_line(const std::string& line, bool show_progress) {
34 if (line.empty()) return;
35
36 // When not invoked with the -p option, it must skip BEGIN and PROGRESS lines otherwise it
37 // will break adb (which is expecting either OK or FAIL).
38 if (!show_progress && (android::base::StartsWith(line, PROGRESS_PREFIX) ||
39 android::base::StartsWith(line, BEGIN_PREFIX)))
40 return;
41
42 android::base::WriteStringToFd(line, STDOUT_FILENO);
43 }
44
bugreportz(int s,bool show_progress)45 int bugreportz(int s, bool show_progress) {
46 std::string line;
47 while (1) {
48 char buffer[65536];
49 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)));
50 if (bytes_read == 0) {
51 break;
52 } else if (bytes_read == -1) {
53 // EAGAIN really means time out, so change the errno.
54 if (errno == EAGAIN) {
55 errno = ETIMEDOUT;
56 }
57 printf("FAIL:Bugreport read terminated abnormally (%s)\n", strerror(errno));
58 break;
59 }
60
61 // Writes line by line.
62 for (int i = 0; i < bytes_read; i++) {
63 char c = buffer[i];
64 line.append(1, c);
65 if (c == '\n') {
66 write_line(line, show_progress);
67 line.clear();
68 }
69 }
70 }
71 // Process final line, in case it didn't finish with newline
72 write_line(line, show_progress);
73
74 if (close(s) == -1) {
75 fprintf(stderr, "WARNING: error closing socket: %s\n", strerror(errno));
76 }
77 return EXIT_SUCCESS;
78 }
79